It's actually tremendously hard to do that on an industrial scale. We still get listeria outbreaks even with pasteurized milk and new bottles. Adding in a sou

It's actually tremendously hard to do that on an industrial scale. We still get listeria outbreaks even with pasteurized milk and new bottles. Adding in a source of contaimination is going to make it that much harder. The issue isn't getting bottles hot enough to kill germs. It's doing so in a way that doesn't aerosolize the bacteria and preventing all the other ways cross contaimination can occur.